Hi Jun,
kernel test robot noticed the following build errors:
[auto build test ERROR on klassert-ipsec-next/master]
[also build test ERROR on klassert-ipsec/master net/main net-next/main linus/master v7.4-rc2 next-20261110]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Jun-Yao/xfrm-avoid-stale-tunnel-pointers-in-deferred-input-callbacks/20261111-174629
base: https://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next.git master
patch link: https://lore.kernel.org/r/20261111094629.230568-1-yaojun8558363%40gmail.com (local)
patch subject: [PATCH] xfrm: avoid stale tunnel pointers in deferred input callbacks
config: mips-xway_defconfig (https://download.01.org/0day-ci/archive/20261112/202611120624.jcKHEACy-lkp@intel.com/config)
compiler: clang version 19.1.7 (https://github.com/llvm/llvm-project cd708029e0b2869e80abe31ddb175f7c35361f90)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261112/202611120624.jcKHEACy-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot [off-list ref]
| Closes: https://lore.kernel.org/oe-kbuild-all/202611120624.jcKHEACy-lkp@intel.com/ (local)
All errors (new ones prefixed by >>):
In file included from net/core/sock.c:134:
include/net/xfrm.h:777:9: error: call to undeclared function 'skb_ext_add'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
777 | return skb_ext_add(skb, SKB_EXT_XFRM_TUNNEL);
| ^
include/net/xfrm.h:777:26: error: use of undeclared identifier 'SKB_EXT_XFRM_TUNNEL'; did you mean 'SKB_GSO_UDP_TUNNEL'?
777 | return skb_ext_add(skb, SKB_EXT_XFRM_TUNNEL);
| ^~~~~~~~~~~~~~~~~~~
| SKB_GSO_UDP_TUNNEL
include/linux/skbuff.h:697:2: note: 'SKB_GSO_UDP_TUNNEL' declared here
697 | SKB_GSO_UDP_TUNNEL = 1 << 10,
| ^
In file included from net/core/sock.c:134:quoted
include/net/xfrm.h:777:9: error: incompatible integer to pointer conversion returning 'int' from a function with result type 'struct xfrm_tunnel_info *' [-Wint-conversion]
777 | return skb_ext_add(skb, SKB_EXT_XFRM_TUNNEL);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/net/xfrm.h:783:9: error: call to undeclared function 'skb_ext_find'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
783 | return skb_ext_find(skb, SKB_EXT_XFRM_TUNNEL);
| ^
include/net/xfrm.h:783:27: error: use of undeclared identifier 'SKB_EXT_XFRM_TUNNEL'; did you mean 'SKB_GSO_UDP_TUNNEL'?
783 | return skb_ext_find(skb, SKB_EXT_XFRM_TUNNEL);
| ^~~~~~~~~~~~~~~~~~~
| SKB_GSO_UDP_TUNNEL
include/linux/skbuff.h:697:2: note: 'SKB_GSO_UDP_TUNNEL' declared here
697 | SKB_GSO_UDP_TUNNEL = 1 << 10,
| ^
In file included from net/core/sock.c:134:quoted
include/net/xfrm.h:783:9: error: incompatible integer to pointer conversion returning 'int' from a function with result type 'const struct xfrm_tunnel_info *' [-Wint-conversion]
783 | return skb_ext_find(skb, SKB_EXT_XFRM_TUNNEL);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/net/xfrm.h:788:19: error: use of undeclared identifier 'SKB_EXT_XFRM_TUNNEL'; did you mean 'SKB_GSO_UDP_TUNNEL'?
788 | skb_ext_del(skb, SKB_EXT_XFRM_TUNNEL);
| ^~~~~~~~~~~~~~~~~~~
| SKB_GSO_UDP_TUNNEL
include/linux/skbuff.h:697:2: note: 'SKB_GSO_UDP_TUNNEL' declared here
697 | SKB_GSO_UDP_TUNNEL = 1 << 10,
| ^
7 errors generated.
vim +777 include/net/xfrm.h
773
774 static inline struct xfrm_tunnel_info *
775 xfrm_tunnel_info_add(struct sk_buff *skb)
776 {
> 777 return skb_ext_add(skb, SKB_EXT_XFRM_TUNNEL);
778 }
779
780 static inline const struct xfrm_tunnel_info *
781 xfrm_tunnel_info(const struct sk_buff *skb)
782 {
> 783 return skb_ext_find(skb, SKB_EXT_XFRM_TUNNEL);
784 }
785
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